Impact resistance of shear thickening fluid/Kevlar composite treated with shear-stiffening gel
Impact resistance of shear thickening fluid/Kevlar composite treated with shear-stiffening gel
复制标题
剪切增稠液/剪切硬化凝胶处理凯夫拉复合材料的抗冲击性能
DOI：
10.1016/j.compositesa.2017.12.019
复制
发表时间：
2018-03-01
影响因子：
8.7
通讯作者：
Gong, Xinglong
中科院分区：
文献类型：
--
作者：
He, Qianyun;Cao, Saisai;Gong, Xinglong
在本工作中，剪切硬化凝胶（STG）被引入到剪切增稠流体（STF）-浸渍的Kevlar（R）机织物（Kevlar/STF）中以提高抗冲击性。STF填充在Kevlar的纱线内，STG覆盖Kevlar/STF以形成Kevlar/STF/STG复合材料。Kevlar/STF/STG中的STG不仅保护了STF，而且由于其优异的剪切硬化特性而提高了织物的抗冲击性。通过纱线拔出试验、分离式霍普金森压杆冲击试验、杆式贯入试验和刀具切割试验验证了增强效果。研究了Kevlar/STF/STG复合材料抗冲击性能的改善机理。在相同的抗冲击性能下，Kevlar/STF/STG复合材料的重量比Kevlar低，其较强的抗冲击性能来源于STF、STG和Kevlar三者之间的协同作用。因此，Kevlar/STF/STG在软质防弹衣中具有广阔的应用前景。(C)2017爱思唯尔有限公司版权所有
In this work, shear-stiffening gel (STG) was introduced into shear thickening fluid (STF)-impregnated-Kevlar (R) woven fabric (Kevlar/STF) to improve the impact resistance. The STF filled within the yarns of Kevlar and the STG covered the Kevlar/STF to form Kevlar/STF/STG composite. The STG in the Kevlar/STF/STG not only protected STF but also improved the impact resistance of the fabric because of its excellent shear-stiffening characteristics. A series of experiments including the yarn pull-out test, the split Hopkinson pressure bar impact test, rod penetration test, and knife cutting test were carried out to verify the enhancement effect. The improvement mechanism of the impact resistance for the Kevlar/STF/STG was studied. Under the similar anti-impact performance, the Kevlar/STF/STG possessed lower weight than the Kevlar and its strong impact resistance originated from the synergetic effect among the STF, STG and Kevlar. Therefore, the Kevlar/STF/STG exhibited broad potential in the soft body armor. (C) 2017 Elsevier Ltd. All rights reserved.